11-07-2017 04:12 AM
I had my y520 for a few months now and I am very happy with it, except a very random issue that I have.
I have all sleep functions turned off, I do not have any use for them. But the laptop frequently enters sleepmode by itself.
In the Event Viewer, I can see the reason it states is "Battery Critical" "Entering sleep - reason: Battery"
Now here is the problem, I seen this happen right before my eyes, even when I was using the laptop, plugged in with the cord. And, at 100% charge.
It keeps entering sleep, stating the battery level is critical. When it is not.
This happens very frequently during nights, when I leave it on to transfer files or similar. Just to wake up with it being off.
And as I stated earlier, I was one day watching youtube and POFF, it turned off. Battery critical. Even though it was plugged in, at 100% charge the second I turned it on again.
Not really sure how to fix it.
11-20-2017 09:30 AM
I have this problem too.
I noticed my laptop was going into sleep prematurely. I verified my power settings aren't to blame.
My laptop is going into sleep mode after 2 minutes and 15 seconds of inactivity.
This is a problem because it causes background tasks to disconnect from the network.
I flashed my bios to the latest version. This had no effect.
11-20-2017 11:45 AM
Could you set your critical battery event to Do Nothing? It's a workaround, but it isn't too bad of a workaround.
Current System - Lenovo Y520. Say thanks with a Kudo!
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12-03-2017 05:17 AM
I have had it sent on "Do nothing" for quite a while now, it still hasn't completly fixed the issue. I still wake up some days, with the machine turned off. With no useful events in Event Viewer.
Either way, it is a decent work around, but i dont think I should have to use such a work around.
After a using the laptop quite a bit the last few weeks, I have multiple times watched the battery guage jump from whatever it currently is on (normally 50-60% since I use the conserve batter life setting) down to 5% for 2-3 seconds, then up to where it used too be.
But, it also jumps the opposite way, it jumps from a lower value, up to 100% for a few seconds and then down again.
It's almost like... the laptop is unable to communicate with the battery for a while and just throws a random value, I don't know. But it's strange, and annoying.
12-04-2017 09:21 AM
Try a power flee once -
1) Shutdown laptop and disconnect the power adapter
2) Press laptop power button for 45 seconds.
3) Reconnect the power adapter and start the laptop.
4) Test it out for some time.
If that does not fix it, then this could be a power adapter or battery issue. Try using the laptop ONLY on battery and see if the battery guage jumps around.
then first try updating the ACPI firmware in control panel > device manager
or contact lenovo for a warranty case and get the battery / power adapter replaced.
12-06-2017 08:32 AM
Excuse the crudity of the gif, I have some work related stuff on the screen that I cannot show. But this is exactly what happens,
I have yet to try the suggestions because I have not found the time, but since i capruted it on video I figured I would add it to the thread. The black-ish overlay that happens is windows warning about low battery.
And to add, at this point in time, I was not at the machine. It was sitting alone, on a table, doing nothing and had been for quite a while.
01-05-2018 10:22 AM
So, short update.
I started dualbooting Debian a few weeks back and have the last 4 weeks had it running Debian.
Since that, I have not had a single issue. So I am suspecting this is a windows related problem, since Debian doesn't have any issues at all. It doesn't sleep, battery level doesn't jump up or down, and no random critical battery warnings.
I have yet to boot up windows since then, but since the problem does not seem to exist in Debian, I would assume that it is Windows doing some of that fancy magic its so good at.
03-19-2018 05:09 AM
03-22-2018 10:32 PM